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NCT Number: NCT05656573

CART-PSMA Cells for Advanced Prostate Cancer

This is a single center, open-label phase 1 study to assess the safety and feasibility of PSMA-specific CAR modified autologous T cells (CART-PSMA cells) in patients with advanced prostate cancer.

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Key information

Age range

35 year–85 year

Sex eligibility

Male

Study type

Interventional

Phase

Phase 1

Primary location

Chinese PLA General Hospital

Beijing, China

Location status: Recruiting

Location contact

Haixing Mai, MD/PhD

SUB_INVESTIGATOR

Jay Zhang, MD/PhD

CONTACT

Xu Zhang, MD/PhD

PRINCIPAL_INVESTIGATOR

Yu Gao, MD/PhD

SUB_INVESTIGATOR

About this study

Part A (Dose Escalation) + Part B (Expansion Cohort) total up to 20 patients enrolled.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • All participants must have the ability to understand and the willingness to sign a written informed consent.
  • Histologic confirmation of prostate cancer.
  • Tumor expressing PSMA as demonstrated by immunohistochemistry analysis or other methods.
  • Eastern Cooperative Oncology Group (ECOG) performance status 0 - 2.
  • Under general air conditions, blood oxygen saturation >90%.
  • Adequate liver function, specifically alanine aminotransferase (ALT) < 3 times of upper limit of normal (ULN), aspartate transferase (AST)< 3 times of ULN, serum bilirubin and alkaline phosphatase < 2 times of ULN.
  • Adequate renal function, specifically serum creatinine < 2.0 mg/dl.
  • Adequate cardiac function, specifically left ventricular ejection fraction (LVEF)≥50%.
  • Hemoglobin concentration ≥80g/L.
  • The side effects brought by the latest treatment should be recovered, and the latest chemotherapy should be at least 7 days before; At least three t½ have passed since the latest immunotherapy.

Exclusion criteria

  • Patients with other malignant tumors or major diseases.
  • Patients who are already undergoing other clinical drug trials or other gene therapy or cell therapy.
  • Patients with uncontrolled active infection.
  • Patients with active hepatitis B or hepatitis C infection.
  • Patients with human immunodeficiency virus (HIV) infection.
  • Patients who are being treated with immunosuppressive agents or systemic steroids (other than inhalation therapy).
  • Patients with various types of serious heart disease or a history of severe cerebrovascular disease.
  • Patients with congenital immune deficiency diseases or bone marrow deficiency diseases.
  • Patients with active autoimmune disease, including connective tissue disease, uveitis, inflammatory bowel disease, or multiple sclerosis; or a history of severe (as judged by the physician-investigator) autoimmune disease requiring prolonged immunosuppressive therapy.
  • Patients with active medical condition that, in the opinion of the physician-investigator, would substantially increase the risk of uncontrollable CRS (cytokine release syndrome) or CAR Neurotoxicity.

Treatment and study plan

CART-PSMA cells

Drug

This study consists of 2 parts:

Part A (Dose Escalation): The investigators are looking the highest dose of the study intervention that can be administered safely without severe or unmanageable side effects in participants that advanced prostate cancer.

Part B (Expansion Cohort): Participants will be treated at the respective dose (at or below the Maximum Tolerated Dose), as determined during Part A (Dose Escalation).

Up to 4 dosing cohorts, with up to 3 subjects enrolled in each cohort, will be explored as follows:

Cohort 1: CART-PSMA cells 1-3x10^7/M^2 (body surface area); Cohort 2: CART-PSMA cells 1-3x10^8/M^2 (body surface area); Cohort 3: Lymphodepletion chemotherapy + CART-PSMA cells 1-3x10^7/M^2 (body surface area); Cohort 4: Lymphodepletion chemotherapy + CART-PSMA cells 1-3x10^8/M^2 (body surface area).

Other names: No other names

Primary outcomes

  1. Occurrence of study related adverse events, laboratory toxicities and clinical events that are possibly, likely, or definitely related to study participation.

    Time frame: Up to 15 years

    Assessing the type, frequency, severity, and duration of adverse events as a result of CART-PSMA cell infusion via physical, laboratory and imaging examination.

Secondary outcomes

  1. The persistence, accumulation, and migration of CART-PSMA cells.

    Time frame: Up to 2 years

    Assessing the trafficking of CART-PSMA cells in the peripheral blood by quantifying the mRNA of CAR gene at the time of each infusion as well as at each time of follow-up blood collection. Peripheral blood will be collected prior to the initial infusion and will be set as baseline.

  2. Overall survival (OS)

    Time frame: Up to 15 years

    Estimating median OS from CART-PSMA cell infusion to the event date (death) or last contact date (censor date) by Kaplan Meier methods.

  3. Progression-free survival (PFS)

    Time frame: Up to 15 years

    Estimating median PFS by survival without biochemical (PSA) or radiographic evidence of disease progression or relapse from CART-PSMA cell infusion to event date (progression/relapse or death); the censor date: off protocol therapy date (required disallowed treatment or withdrawal of consent for further therapy) or last contact date.

  4. Patterns of change in PSA (prostate-specific antigen)

    Time frame: Up to 5 years

    Assessing PSA response by the percentage of change in PSA from baseline to the defined time-frame on therapy (or earlier if patients discontinue therapy prior to the time-frame) as well as the maximum decline in PSA that occurs at any point during CART-PSMA cell infusion.

  5. Serum cytokine profile

    Time frame: Up to 2 years

    Assessing potential cytokine release syndrome (CRS) toxicity and CART cell effector function, sequential serum samples by analysis of Th1/Th2 cytokines (e.g., IL-2, IFNgamma, TNFalpha, IL-10, GMCSF, IL-6, MIP-1alpha) before and after CART-PSMA cell infusion.

  6. Phenotypes and frequencies of immune cell subsets in the peripheral blood pre- and post-therapy

    Time frame: Up to 2 years

    Assessing phenotypes and frequencies of immune cell subsets in the peripheral blood, T cell subsets and phenotypes utilising groups of labelled antibodies.

  7. Changes in circulating tumor cells in peripheral blood

    Time frame: Up to 2 years

    Assessing changes in levels of circulating tumor cells (CTC) to investigate if decreases in CTC levels correlate with response.

  8. Circulating cell-free deoxyribonucleic acid (cfDNA) in peripheral blood

    Time frame: Up to 2 years

    Assessing changes in levels of cfDNA to investigate if decreases in cfDNA levels correlate with response.

Study contacts

Contact information is provided by the study sponsor or research team.

Jay Zhang, MD/PhD

CONTACT

[email protected]

858-205-4558

Sponsors and collaborators

Lead sponsor

Nova Therapeutics LLC

Industry

Collaborators

  • Chinese PLA General Hospital

Registry information

Official study title

Phase I Study of CART-PSMA Cells in Patients With Advanced Prostate Cancer

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Dec 19, 2022
Registry last updated
Nov 15, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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